Jewels From Upanishads: 1.6 He That Sees Him In All, All In Him Poem by Aniruddha Pathak

Everyone as his own self,
And in everyone himeslf,
Who sees allwhere the same Self—
The atman his own,
He then hates no one.
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Transliteration of the verse from Isha Upanishad, Sandhi separated:

yah tu sarvāņi bhūtāni ātmani eva anu-pashyati |
sarva bhūteśhu cha ātmānam tatah na vijugupsate || Isha 6 ||

yah tu: but he that; sarvāņi: all, every; bhūtāni: beings, creatures, life; ātmani eva: in one's own Self, in him itself, as not different from the self; anu-pashyati: perceives upon seeing; sarva bhūteśhu cha: and in all beings; ātmānam: (sees)his (own)Self, himself; tatah: thereby, by the virtue of that vision, thence; na vijugupsate: feels no hatred, shrinks not from others.

Bhagavad-Gita also said much the same:

One's own self in every self,
And every self in own self,
He that yoked in yoga is,
The seer of the same sees.

Topic: one in all, all in one, family, hate